Non-slip device



UNITED .STATES 1 PATiaNTiolfrlcr.*v

JOS GARZA ZERTUCHE, or MEXICO, MEXICO. l

NON -SLIP DEVICE.

To all whom t may concern Be it known that I, JOS GARZA ZER- 'rnonn a citizen of Mexico, and a resiydent of Mexico City, I). F., Mexico, have invented a new and Improved Non-Slip Device, of which the-following is a description. My invention relates to a non-slip device Acomprising a suction cup which when in luse is secured to an article such .as an article of footwear for man or horses, the cup being sustained inverted in a manner to present its open side to kthe ground for collapsing under the imposed pressure and effecting aholding action on the slipping.

The general object of my invention is to insure the suction and the holding action of the cup when presented to the ground unground to prevent der pressure and having means whereby the vacuum and suction will be broken when the pressure is relieved, a more specific objectof the invention being to provide a Vsuction cup for the stated purpose presenting a vent opening of such a character and in such a position as to be closed by the under surface of the article carrying the cup when the cup is presented to the ground and pressure-is consequently exerted thereon as in walking and whereby vthe ventwill be opened upon the pressure being relieved.

Referencek is to be had to the accompanying-drawings forming a part of this specification, it being understood that the drawings are merely illustrative of one example of the invention. y

Figure 1 is a sideelevation showing two of my improved suction cups and an article of footwear adapted to be secured Vto a boot or shoe; f

Fig. 2 is a detail in longitudinal vertical section through the rear portion of said article and the adjacent suction cup.

In the illustrated example my improved suction cups are applied to an article of footwear to be attached to a boot or shoe but it will be understood that the vcups may be employed on an article to be applied to a horses hoof or in other situations.

Two of my improved suction cups 10 are secured in the illustrated example to the under side of a plate or board l1, hereinafter referred to as a plate. Said plate has the curved member 12 at the rear end to conform generally to the heel of the vshoe y Specification of Letters Patent. Pittntd Aug, 30, 1921. APPIUaOIl filed A11g`1151313, 1920. Serial N0. 403,248.

device in position, there being shown convergent straps 14- riveted or otherwise secured as at 14a to plate 11, the ends ofthe straps being adjustably secured Aby a buckle 15.` The one-cup 10is secured beneath the heel portionv of the vplate 11 and the other in position to lie beneath the ball of the foot when the device is worn but the cups may be of various sizes andV can be employed in any suitable number on the plate 11 or equivalent supporting member. The cup is formed with a flat central area 10a perforated `to receive a fastening rivet 16 or the like which passes through the top of the cup at thecenter and if desirable through wash` ers 16a, 16b at the inner and outer surfaces of the cup. Y i

I produce a vent orifice 1 7 in the cup 10 and produce a protuberance 18 about the `lower edge 19 of the cup lies in a single plane for effective contact with the ground.

In use when a cup is placed against the groundy as in walking and caused to collapse under the pressure exerted downwardly thereon the cup will be caused to collapse as will be obvious and the protuberthe plate 11, thereby closing the orifice 17 and insuring a holding suction to prevent slipping. W'hen, however, the pressure on the top of the cup is relieved, its resiliency will cause it to resume its normal flaring appearance and the protuberance 18 will move away from contact with the plate 11, thereby venting the cup at the opening 17 and breaking the holding action of the cup.

I would state in conclusion that while the illustrated example constitutes a practical embodiment of my invention, I do not limit cup is apthe orifice ance 18 will be brought into contact with myself strictly to the mechanical details herein illustrated since manifestly the same can be considerably varied without departure from the spirit of the invention as defined in the appended claims.

Having thus described my invention, I claim:

l. As an article of manufacture, a nonslip device` comprising a resilient suction cup, and an article carrying said cup and adapted to secure it in position, said cup having` a vent opening;` and said article presenting a surface into contact with which the vented portion of the cup moves when collapsed, for the closing of said vent opening.

2. As an article of manufacture, a. nonslip device including a resilient suction cup, and an article carrying the same, said cup having a vent opening, and being collapsible toward. said article under pressure, the said article constituting a closure of the vent opening` in the collapsed form of the cup,Y

and the cup serving,` to cause automatic venting upon the pressure being relieved.

3. As a new article of manufacture, a suc- -tion cup having a vent opening extending from the interior through the flaring exterior of the cup between `the top and bottom of the same.

i. As a new article of manufacture, a nonslip device comprising a suction cup, and an larticle lon which `said cup is carried, said yventslipping said cup having a vent opening Vadapted to be automatically closed under pressureexerted on. the cup and tending to automatically `open in the absence of pressure on the cup. I

. Josii eARzA-ZERTUCHE. 

